Carbureter.



J. M. DAYTON.

CARBURETER.

APPLICATION FILED APR. 6, 1912.

PO 1 9 1 0Q 1 w M d e m e t nu P J. M. DAYTON.

CARBUR ETER.

APPLICATION FILED APR.6. I9I2.

Patented May18, 1915.

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JAMES M. DAYTON, OF TOREING'ION, CONNECTICUT, ASSIGNOR TO EXGELSIOR NEEDLE comm, OF TOREINGTON, IONNEGTICUT, A CORPORATION OF CONNECTICUT.

CAEBUBETER.

mas er.

Application filed April 6,

To all whom it may concern Be it known that 1, JAMES M. DAYTON, a citizen of the United States, residing at Torrington, in the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Carburetors, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon. I

The invention relates to improvements in carburetors, and more particularly to carbureters of the type used in connection with marine explosive engines- An object of the invention is to provide a carbureter having a throttle valve and an air intake valve with common means for operating the throttle valve and air valve, which means includes yielding devices for '20 ermitting the movement of one of the valves independently of the other.

A further object of the invention is to provide a valve-operating mechanism of the above character with devices, whereby one of'said valves may be adjusted relative to its operating mechanism.

A furtherv object of the invention is to provide a carbureter having a mixing chamber and openings leading thereto, which are disposed in lines at rightangles to one an- In the drawings, Figure l is" a side ele vation of my improved carbureter partly.

in section, in its low speed position and set for vertical use; 'Fig. 2 is a detached per spective view of ithe valves, and their con? nection's, as shown inFig. 1; Fig; 3 is a side elevation, partly in section, showing the @QrelQfiVG position of the "valve at low speed when set for horizontal use; Fig. L isa detail perspective of the throttle'valve crank and operating rod whenthe carbureter' is used horizontally.

My invention is primarily intended for Specification of Letters Patent.

Patented May 18, 1915. 1912. Serial milesasa'z.

float 5. The gasolene enters the carburetor through the connection 6, and is regulated by means of the needle valve 7 the spray nozzle being indicated at 70. This'needle valve regulates the admission of the fuel into the carbureting chamber according to the speed of the engine desired, and a constant fuel level just below the top of the spray nozzle is maintained by a valve attached to the float. An adjusting graduated dial 8 is shown exterior of the carbureting chamber, where a correct adjustment of the fuel being admitted is obtained.

Located Within the air intake 2 is a damper or butterfly valve 9, which controls the amount of air drawn into the carbu'reting chamber. The valve 9 is shown as secured to a shaft 10, which extends through the easing of the air intake, A crank arm 11 is loosely fitted upon the shaft 10, without the air intake passage, and at its upper end car- "ries a spring-pressed pawl 12, adaptedto engage 'inotches on the periphery of a dial 13, located adjacent the crank arm. The

dial 13 is graduated, as shown, and is fixed to the shaft 10. The purpose of this construction is to permit of an adjustment of "the valve within the air intake when the pawl is released; relative to the operating crank arm 11 therefor. The crank arm 11 is shown aspfovided with a boss 14, having fastened'toit a'second boss or supporting bearing 15; This second boss is formed with an over sizeiholeswithin it to allow the free passage of a rod that reciprocates tlinoilgh it, to be hereinafter described.

Located'within the gas outiet is, a valve 17 of the damper-or butterfly type, the purpose of which is to throttle e1:- control the gas that enters the engine. A throttle stop screw is shown at 20, and'pe'rmits of theadjusting of the valve; 17 for a low speed po- 110 sition. This valve is secured to a shaft 19 that cxtendswithout the gas outlet passage. A crank 21 is fixed to one end of the shaft 19. To the end of the crank 21 is pivoted one end of the rod'22, (hereinafter referred to), which then passes through the oversize hole formed within the second boss or supporting bearing 15. Springs 23 and 24 are shown as encircling the rod 22 and bearing against this boss at each 'side thereof. The springs are fastened to the rod at their extremities, and permit of a uniform or simultaneous movement of the two valves, namely, the air intake and gas outlet, by means of the rod connection until otherwise interrupted, when a yielding or compressing of one of the springs will permit of a continued moving of ,one of the valves. The movements of the valves are interrupted by stops 25 and 26, formed upon the valves 9 and 17,

respectively, coming in contact with the will be compressed because of the Prelimi-' nary stopping of the air intake valve 9. A throttle crank arm 27 is shown in Fig. 2 as secured to one end of the shaft 19, thus imparting movement by means of the rod 28 to the valves within the carbureter from the operator.

Referring to Fi 1. the valves are shown as set at a low speed position. A movementof the rod 28 will open the gas outlet valve 17, and by means of the rod connection, the valve 9 will eorrespondingl open, thus allowing an automatic increasing of the speed and power. but at the same time maintaining the relative proportions of air and fuel. The valves will move in unison until the air intake valve 9 is stopped by the pin projection 26. The valve 17 continues to open a distance by reason of the rod connection sliding through the boss 15 against the tension of the spring 23, until it is stopped by its pin projection 25. In the return moveinent. the valve 17 starts to close first, when it picks up the valve 9 and they close together.

As shown in Figs. 3 and 4:, the carbureter is set for a horizontal use, z'.e., the air intake becomes the gas outlet, and the gas outlet becomes the air intake. This twofold arrangement is to accommodate its ready attachment to engines of different types, wherein their gas supply is arranged vertically or horizontally as the case may be. In effecting this change, the spring-pressed pawl is released from the dial 13. This permits of a proper setting of the valve 17 so as to become the air intake controlling valve, the screw stop QO being shifted accordingly, as shown in Fig. 3; and also the correct positioning of the valve 9, so as to become the gas outlet controlling valve. Thus positionedfor the proper mixture, the pawl is moved into engagement with the dial, and the valves are-thus connected together for uniform movement. By reason of the valves being so adjusted, it will be obvious that the stops 25 and 26 operate inversely, that is, the pin 25 on the air intake valve will operate first, and then the pin 26 on the gas outlet valve last. In this operation, the spring 21 is compressed until the pin 26, as has been stated, stops the movement. The return movement of the valves is the same as when otherwise set. In changing from the vertical to the horizontal operating of the carbureter, the throttle crank arm is of necessitv transferred to the shaft regulating the gas outlet. I

From the above description, it will be noted that the throttlevalve may bethrown to open position and the air inlet valve will be wide open. When the parts are in this position, the needle valve may be adjusted to adjust the supply of fuel for the maximum or highest speed of the engine. At low speed the throttle valve is nearly closed, as shown in the drawings. If the damper or controller for the air intake were entirely closed;' the suction on the spray nozzle would be too great. and if the air valve or damper be wide open, the suction would not be sufficient, and this would result in a mixture either too rich or too weak. To obtain the best mixture at low speed, the spring-pressed pawl 12 is raised from the notches in the dial connected to the air valve, and the air valve is adjusted until the proper degree of vacuum in the carbureter is obtained for the low speed. after which the pawl is allowed to engage the notches in the dial, and the valve- 2 is then locked to its operating mechanism.

It will be seen, therefore, that I have provided a. valve-operating mechanism which may be so adjusted as to give the greatest efliciency'for high speed and also for low speed.v and that this is accomplished through the yielding connection between the two valves and the means for adjusting one of the valves relative to its operating mechanism.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent, is

1. A carbureter including in combination, a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, an air valve for said air inlet, means for operating said valves including a" device connected to and movmg with one of said valves and having a movable connection with the other valve, yielding devices for holdi the movable connection between said v ve and said device in a predeterminerhposition whenthe valves are open, and devices for independently limiting the closed position of said valves.

2-. A carbureter including in combination,

a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, and an air valve for said air inlet, means for operating said valves including a rod connected to and moving with one of said valves and having a sliding connection with the other valve, and yielding devices for holding the sliding connection between said valve and saiddrod in a predetermined position.

3. A carbureter including in combination, a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, an air valve for said air inlet, means for operating said valves including a rod connected to and moving with one of said valves and having a sliding connection with the other valve, yielding devices for holding the sliding connection between said valve and said rod in predetermined position, and means for adjusting the position of the "alve relative to said predetermined position.

4. A carbureter including in combination, a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, and an air valve for said air inlet, means for operating said valves including an arm fixed to one of said valves, an arm adjustably connected to the other valve, a rod pivoted to one arm and havinga sliding connection with the other arm, and

yielding devices for maintaining said slidmg arm in a predetermined posltion on said rod.

5. A carbureter including in combination, a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, and an air valve for said air inlet, means for operating said valves including an arm carried by one of said valves, stops for limiting the movement of said valve, stops for limiting the movement of the other valve, an arm adjustably connected to said last named valve, a rod pivoted toone arm and having a sliding connection with the other arm, and springs for holding said sliding arm in a predetermined position on said rod.

6. A carbureter including in combination, a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, and an ..ir valve for said air inlet,

means for operating said valves including an arm connected to one of said valves, a dial connected to the other valve, an arm, a spring pawl carried by the arm for locking the same to said dial, a stop for limiting the movement of said last named valve, and devices for connecting said arms, whereby said arms may be moved together and one of said arms may be moved independently of the other.

7. A carbureter including in combination; a carbureting chamber having a gas outlet, an air inlet, a throttle valve for said gas outlet, and an air valve for said air inlet, means for operating said valves including an arm connected to one of said valves, a dial connected to the other valve, an arm, a spring pawl carried by the arm for looking the same to said dial, a stop for limiting the movement of said last named valve, a'rod pivoted to one of saidarms and having a sliding connection with the other, a collar on the end of said rod, springs encircling said rod on each side of said arm for holding said arm in a predetermined position relative to said rod.

In testimony whereof, I aifix my signature, in the presence of two .Witnesses.

JAMES DAYTON.

Witnesses:

D. HILDRETH, A. W. CALLENDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

